APA (7th ed.) Citation

Davidson, K., & Sagan, C. (1999). Carl Sagan: A life. J. Wiley.

Chicago Style (17th ed.) Citation

Davidson, Keay, and Carl Sagan. Carl Sagan: A Life. New York, N.Y.: J. Wiley, 1999.

MLA (8th ed.) Citation

Davidson, Keay, and Carl Sagan. Carl Sagan: A Life. J. Wiley, 1999.

Warning: These citations may not always be 100% accurate.